If you have dry or sensitive skin and you have acne you will need to take special care to not only cure your acne but to take care of your skin. Most acne treatments will cause your skin to dry out as they are intended to prevent overproduction of of oil and if you have dry skin this will only make your problems worse as your skin will more than likely become irritated and flaky. If you have very sensitive skin the chemicals in many of the acne treatments will increase irritation and redness so you need to be especially cautious which treatments you use.